In my early days of AAS I ran 800mg/week of test-E without any gyno issues. However, once I got gyno the first time, it now comes back even at only 400mg/week of test-E.
Too much arimidex really kills my mojo so now on cycle I run 0.5mg/day arimidex with 40mg/day of nolvadex. This completely keeps my gyno in check.